Images 28.08.2021 · Istanbul University Observatory Solar Observations

Solar Images Saturday, 28 August 2021

‹ 27.08.2021 2021 29.08.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 09:30 UT
Observer: Ergün EGE
g: 3
f: 24
R: 54
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HR_ – 4

Group 2 · EAC – 18

Group 3 · AX_ – 2

RDS data file (.gzd)

[Gözlem]
Tarih=28.08.2021
Saat=09:30
Gözlemci=Ergün EGE
KontrolEden=Özgecan ÖNALTAŞ
Durumaçısı=20.14
Enlemaçısı=7.12
Boylamaçısı=359.04
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19260
AyRasatNo=28
RasatÖnceki=27.08.2021
RasatSonraki=29.08.2021

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=24:4:20
RölatifSayı=54:14:40
01=HR_ 04 +18.697 +09.575 008.615 +0.000 0000 0 +19.890 +11.225 +17.504 +07.925 +18.697 +10.725 +18.697 +08.425
02=EAC 18 -27.717 +01.179 000.219 +0.000 0000 0 -23.451 +07.812 -31.984 -05.454 -27.717 +07.612 -27.717 -05.254
03=AX_ 02 -17.334 -32.193 326.848 +0.000 0000 0 -16.705 -31.305 -17.963 -33.810 -17.334 -31.441 -17.334 -32.945

20210828.gzd

Chromosphere (H-α) FITS frames

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2021/20210828_ee · EE · 9 frames · 192.8 MB · 09:30:03–09:53:46 UT

09:30:03 UT · 40 ms